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-rw-r--r--src/sim/serialize.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/sim/serialize.cc b/src/sim/serialize.cc
index 7050779b2..a4851d3f6 100644
--- a/src/sim/serialize.cc
+++ b/src/sim/serialize.cc
@@ -405,6 +405,8 @@ Serializable::serializeAll(const std::string &cpt_dir)
string cpt_file = dir + Checkpoint::baseFilename;
ofstream outstream(cpt_file.c_str());
time_t t = time(NULL);
+ if (!outstream.is_open())
+ fatal("Unable to open file %s for writing\n", cpt_file.c_str());
outstream << "// checkpoint generated: " << ctime(&t);
globals.serialize(outstream);